Annual report pursuant to Section 13 and 15(d)

Segment Information (Details)

v2.4.0.6
Segment Information (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
segment
Dec. 31, 2011
Dec. 31, 2010
Segment Reporting Information [Line Items]                      
Number of Reportable Segments                 4    
Real estate rental revenue $ 77,071 [1],[2] $ 77,108 [1],[2] $ 75,590 [1],[2] $ 75,214 [1],[2] $ 75,413 [1],[2] $ 70,550 [1],[2] $ 70,321 [1],[2] $ 67,872 [1],[2] $ 304,983 $ 284,156 $ 253,127
Real estate expenses                 103,276 95,342 84,745
Net operating income                 201,707 188,814 168,382
Depreciation and amortization                 (103,067) (91,805) (78,483)
General and administrative                 (15,488) (15,728) (14,406)
Real estate impairment                 (2,097) (14,526) 0
Acquisition costs                 (234) (3,607) (1,161)
Interest expense                 (64,697) (66,214) (66,965)
Other income                 975 1,144 1,193
Loss on extinguishment of debt, net                 0 (976) (9,176)
Gain from non-disposal activities                 0 0 7
Income from properties sold or held for sale                 1,485 11,923 16,569
Gain on sale of real estate                 5,124 97,491 21,599
Income tax benefit (expense)                 0 (1,138) 0
Net income 2,958 [1],[2],[3] 9,561 [1],[2] 6,008 [1],[2] 5,181 [1],[2] 31,098 [1],[2] 63,036 [1],[2] 6,556 [1],[2] 4,688 [1],[2] 23,708 105,378 37,559
Less: Net income attributable to noncontrolling interests in subsidiaries                 0 (494) (133)
Net income attributable to the controlling interests 2,958 [1],[2] 9,561 [1],[2] 6,008 [1],[2] 5,181 [1],[2] 30,689 [1],[2] 63,008 [1],[2] 6,522 [1],[2] 4,665 [1],[2] 23,708 104,884 37,426
Capital expenditures                 51,735 33,436 25,437
Total assets 2,124,376       2,120,758       2,124,376 2,120,758 2,167,881
Office [Member]
                      
Segment Reporting Information [Line Items]                      
Real estate rental revenue as a percentage of total                 0.50 0.49 0.47
Percentage of total income producing real estate assets                 0.53 0.52  
Real estate rental revenue                 152,916 138,325 119,359
Real estate expenses                 55,113 47,289 40,676
Net operating income                 97,803 91,036 78,683
Capital expenditures                 35,330 21,065 13,983
Total assets 1,140,046       1,118,074       1,140,046 1,118,074 938,638
Medical Office [Member]
                      
Segment Reporting Information [Line Items]                      
Real estate rental revenue as a percentage of total                 0.15 0.15 0.18
Percentage of total income producing real estate assets                 0.16 0.17  
Real estate rental revenue                 44,674 44,431 44,166
Real estate expenses                 14,994 14,063 14,516
Net operating income                 29,680 30,368 29,650
Capital expenditures                 7,004 5,654 4,986
Total assets 327,573       347,735       327,573 347,735 353,508
Retail [Member]
                      
Segment Reporting Information [Line Items]                      
Real estate rental revenue as a percentage of total                 0.18 0.18 0.16
Percentage of total income producing real estate assets                 0.17 0.17  
Real estate rental revenue                 54,506 50,421 41,003
Real estate expenses                 12,702 14,273 10,310
Net operating income                 41,804 36,148 30,693
Capital expenditures                 2,977 2,922 1,982
Total assets 355,585       365,164       355,585 365,164 313,003
Multifamily [Member]
                      
Segment Reporting Information [Line Items]                      
Real estate rental revenue as a percentage of total                 0.17 0.18 0.19
Percentage of total income producing real estate assets                 0.14 0.14  
Real estate rental revenue                 52,887 50,979 48,599
Real estate expenses                 20,467 19,717 19,243
Net operating income                 32,420 31,262 29,356
Capital expenditures                 5,869 2,823 2,387
Total assets 249,503       247,170       249,503 247,170 228,769
Industrial/Flex [Member]
                      
Segment Reporting Information [Line Items]                      
Real estate rental revenue                   0 0
Real estate expenses                   0 0
Net operating income                   0 0
Capital expenditures                   351 1,707
Total assets         0         0 225,206
Corporate And Other [Member]
                      
Segment Reporting Information [Line Items]                      
Real estate rental revenue                 0 0 0
Real estate expenses                 0 0 0
Net operating income                 0 0 0
Capital expenditures                 555 621 392
Total assets $ 51,669       $ 42,615       $ 51,669 $ 42,615 $ 108,757
[1] With regard to per share calculations, the sum of the quarterly results may not equal full year results due to rounding.
[2] The prior quarter results have been restated to conform to the current quarter presentation. Specifically, results related to properties sold or held for sale have been reclassified into discontinued operations.
[3] The three months ended December 31, 2012 and 2011 include the impact of real estate impairments of $2.1 million and $14.5 million, respectively.